package com.ljy.my_study.book.tom.软件架构设计原则.单一职责原则.two;

public class TestMain {

    public static void main(String[] args) {
        LiveCourse liveCourse=new LiveCourse();
        liveCourse.study("直播课");
        ReplayCourse replayCourse=new ReplayCourse();
        replayCourse.study("录播课");
    }
}
